PREHEAT oven to 400°F Line roasting pan or 15x10-inch jelly-roll pan with foil.,PLACE tenderloin, potatoes, bell peppers, onion, oil and seasoning mix in large heavy-duty plastic bag; shake to coat. Place tenderloin in center of prepared pan. Arrange vegetables around tenderloin.,______,CROCK POT DIRECTIONS: Preheat your crock pot on low while chopping vegetables. Spray the inside of the pot with cooking spray, place the meat in the bottom then layer the veg's around it. Cook on low for about 6-8 hours.